نتایج جستجو برای: nano potassium
تعداد نتایج: 127784 فیلتر نتایج به سال:
Potassium is the third essential nutrient of commercial fertilizers, which strengthens plants' abilities to resist diseases and plays a vital role in increasing crop yields overall quality. Nanofertilizers offer benefits nutrition management through their strong potential increase uptake efficiency release nutrients very slowly compared with conventional fertilizers. fertilizer nano-copper fert...
Potassium permanganate (KMnO4) is a dominant ethylene (C2H4)-scavenger extensively used in fresh horticultural commodities, mainly climacteric fruit, to prolong their shelf life. This material has been traditionally utilized as C2H4-permeable sachet for inclusion into packages of produces. New formulation strategies are required polymeric materials develop nanocomposites with scavenging potenti...
The influence of increasing the SiO2/K2O molar ratio on the electrochemical action of a waterborne potassium silicate zinc-rich coating was investigated by means of electrochemical impedance spectroscopy (EIS) and corrosion potential (Ecorr) measurements. The EIS results showed that increasing the SiO2/K2O molar ratio in the range of 3.135 to 5 by the addition of nano-SiO2 to the resins improve...
ultraviolet waves, because of their short wavelength, have a high energy and considerable damaging effects on surfaces. protection against ultraviolet radiations is one of the finishing treatments done on surfaces exposed to sunlight. the importance of this issue in relation to human health, due to complications such as skin burns and cancer, is doubled. up to now, different materials such as z...
thermal barrier coatings (tbcs) are used to provide thermal insulation to the hot section components of gas turbines in order to enhance the operating temperature and turbine efficiency. hot corrosion and thermal shocks are the main destructive factors in tbcs which comes as a result of oxygen and molten salt diffusion into the coating. in this thesis atmospheric plasma spraying was used to dep...
PURPOSE Rapid development of nanotechnology has recently brought significant attention to the extraordinary biological features of nanomaterials. The objective of the present investigation was to evaluate morphological characteristics of the assembles of gold and platinum nanoparticles (nano-Au and nano-Pt respectively), with Salmonella Enteritidis (Gram-negative) and Listeria monocytogenes (Gr...
Environmental, health, and safety (EHS) concerns are receiving considerable attention in nanoscience and nanotechnology (nano) research and development (R&D). Policymakers and others have urged that research on nano's EHS implications be developed alongside scientific research in the nano domain rather than subsequent to applications. This concurrent perspective suggests the importance of early...
روش تولید بیودیزل ازروغن پسماند، استفاده از روش دو مرحله ای استریفیکاسیون اسیدی وترانس استریفیکاسیون است.در این تحقیق به منظور کاهش هزینه های تولید و کاهش مقدار کاتالیست و افزایش راندمان بیو دیزل، از سنتز نانو کاتالیستهای معدنی در دسترس نظیر اکسیدهای فلزات قلیایی خاکی (اکسید کلسیم و اکسید باریم) سنتز شده در فرآیند مورد استفاده قرار گرفته است. در نهایت با انجام آزمایشات ،بهینه ترین بازده برای تو...
Introduction and Background: Ceramics are inorganic, nonmetallic materials, such as alumina, beryllia, or glassceramic, whose final characteristics are produced by subjection to high temperatures. Nanomaterials is a rapidly growing area of ceramics [1-3] and can be classified into the following categories: Nano-particles submicron or ultra micron size particles; Nano-fibers – nanometer (nm) siz...
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